What is this knife / bayonet?

[GlennT93]

I just got a hold of a knife or bayonet or whatever it is, im a Norwegian and have no idea what this is. On the sheet it says
US.M8A1, any history on this? Worth?

[Ridgegrass]

It's a Korean war era bayonet. There are some on ebay for sale for $75-$90 USD. Good luck with it. J.O'.

[zzyzzogeton]

The bayonet is a Norwegian AG3 Type 1 bayonet. The sheath is a US M8A1 sheath, appropriate for a US M4, M5, M6 or M7 bayonet. The sheath could have been manufactured under various contracts at any time between 1944 and 1969, when the last contract was let. A close time of manufacture would be dependent on what else is stamped into the throat piece of the scabbard.

[eveled]

Mismatched but cool.